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ASOE Physics Exam Q - Diagram for Constructive Interference

  1. Jul 12, 2017 #1
    1. The problem statement, all variables, and given/known data

    So I am studying for the ASOE physics test. I came across the following question where I can't really understand the answer to it:


    The actual answer is: http://prntscr.com/fum35c

    Could someone help me and explain what they are talking about? Is this just a different format of drawing to the same point.


    2. Relevant equations
    Constructive Interference?

    3. The attempt at a solution

    I drew something like this: http://prntscr.com/fum2ha
     
  2. jcsd
  3. Jul 12, 2017 #2

    Doc Al

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    Staff: Mentor

    Those are two different versions of the same idea. Note that the question just wants you to show the points of constructive interference, not the full interference pattern.

    You might want to read this: Two Point Source Interference
     
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